Rotary drier.



W. W. SWENGEL. Anor/uw DRIER.

APPLICATION FILED OCT. I2. |916.

W. W. SWENGEL.

ROTARY DRIER.

APPLICATION FILED OCT. l2. I9I6.

6] Hoz m o W. W. SWENGEL.

ROTARY DRIER.

APPLICATION FILED ocT. I2. 1915.

Patented Sept 4 SHEETS-sniff 3.

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ROTARY DRIER.

APPLICATION FILED ocT.12. 191e.

Patented Sept. 18, 1917.

4 SHEETS-SHEET 4' mh; -ME

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at Bloomsburg,

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To'aZZ whom t may concern:

Be it known that 1, WILLIAM W. SWEN- GEL, acitizen of the United States,- residing in the county of Columbia and State of Pennsylvania, have invented certain new and useful'mprovements in Rotary Driers; and lI do declare the following to be` a full, clear, and exact description of the invention, such vas will enable others skilled in the art to which it appertains to make and use the same.

This invention is an improved drier having for its object to provide a simple, light, and compact machine which regardless of these advantages.l will be durable and will attain greater efciency than heavier and more cumbersome machines now in use.

With the foregoing general object in view, the invention resides in certain novel features of construction and in unique combinations of parts to be hereinafter fully de scribed and claimed, the descriptive matter being supplemented by the accompanying drawin s which constitute a part of this apand in which: z Y

Figure 1 is a vertical longitudinal section of one form of the machine;

Fig. 2 is a transverse section thereof on the plane indicated by the line '2-2 of Fig. 3 is a similar view on the plane indicated by the l-ine 3-3 of Fig. 1;

Fig. 4 is a side elevation of a slightly different type of the improved drier;

Fig. y5 is a vertical section thereof on .the

plane of the line 5-5 of Fig. 4:; r

Fig. 6 is a similar view on the planeindicated by the line 6-6 of Fig. 4; and

Fig. 7 is a detail section showing the manner in which the material may be dried 'and screened at vthe same time.

1n the drawings, the numerals 1 designate a pair of suitably constructed upright end frames between which a housing 2 is erected, said housing being of metal or masonry as occasion may demand. A plurality of vertically spaced drying drums 3 are disposed longitudinally within the housing 2, said drums having shafts 4 extending 1ongitudinally therethrough and connected therewithby spiders 5, both ends of said shafts being rotatably mounted in suitable vertically adj ustably rockably mounted bearings 6. Transverse driving shafts 9 are mounted rotatably in vertically adjustable bearings 10 secured to cross bars -11 of the specification of Letters,l Patent Patented Sept. 18,1919. Application led October 12, 1916. Serial 11o. 125,252.

vertically in any preferred manner, but for illustrative purposes l( have shown a plurality of washer plates 12 interposed between said bearings and bearings are to be elevated, additional washer plates will. be inserted, but when it is necessary to lower said bearings, certain of the previously applied plates will be removed.

The shafts 9 have pinions 13 keyed thereon, said pinions meshing with gears 14 which are secured to the shafts A, whereby driving of said shafts 9 will rotate the several drums. 'f

Any one of the shafts 9 may be driven andpower transferred therefrom to the other shafts through the instrumentality of belts 15 and'pulleys 16, the intermediate shaft 9 being shown in the present'embodiment of the invention as l whereby it may be rotated. A feeder, a fan, and a conveyer are also driven from the intermediateshaft 9 as will be hereinafter described.

A furnace 18 supplies heat to the lower end of the casing 2 through a suitable'heat inlet opening 19, this heat being directed around practically the entire circumference of each drum 3 by a system of baliie plates' the bars 11. When thevhaving thereon a pulley 17 20 disposedin staggered relation and extendheat conduit 23 is disposed vertically at one frame 1. The bearings 10 may be adjusted end of the housing 2 and one end lof drums 3 extend into said conduit as shown clearly in Figs. 1 and 3. The other ends of said drums, however, project into an upright stack 24.

A rotary fan 25 is mounted in one end of the conduit 22 and is driven by a belt. 25 from the intermediate shaft 9 above described, said fan beingadapted to draw hot air from the casing 2 through the openings 21 and conduit 22, and to discharge this air into the stack 2L1'through the several drums 3. For permitting the-fan 25 to operate in thismanner, it is provided with an outlet pipe 26 disposed in conduit 23 and having a plurality of branches 27 which extend into the drums. By this arrangement of parts it will be obvious that the heat within the I casing 2 aroundv the drums 3 will serve as drying means for the material passing through said drums and that the blasts of hot air from the branches 27 will greatly increase the drying capacity of the machine.

For supplying the machinewith the material to be dried, hopper 28 having a discharge chute 29 is provided, said chute delivering into the upper end of the uppermost drum-3. Any suitable type of feeder 30 will be disposed in the hopper 28 and may Well be driven b a belt 31 from the intermediate shaft 9. s the material works itsA way through the upper drum and' is discharged from the lower end thereof, it is directed into the upper end of the intermediate drum by an inclined chute 32 disposed lin the conduit 23, and from the lower end of said intermediate drum, the material will be guided into the upper end of the lower drum by an A additional chute 33 which, like the chute 29, extends across the stack 24. The lower end of the last named drum delivers into a suitable conveyer 34 by means of which the dried material is ltaken from the machine,

. said conveyer being driven by a belt 34 from the driving shaft 9.

In Figs. 4, 5, and 6, the construction and arrangement of most parts is substantially the same, and the reference numerals above employed are therefore applied .also to these figures. The main difference is that the heat outlet conduit 22 is located at'the bottom of the housing 2 While the furnace 18 delivers into the upper end of said housing rather than into the lower end thereof as above described. This necessitates placing the fan 25 at the lower end of the conduit` 23 as shown. The operation and advantages of this form of the machine are the same as that above described and further explanation is therefore deemed unnecessary.

Fig. 7 discloses a drum 3a which may be employed at the bottom of either form of lthe machine, Said drum having therein a screen 3b whereby sand or the like being dried by the machine ,may be screened at the same time. u

When setting up the improved machine in any of its forms, the inclination of the drums 3 will be initially adjusted according to the character of theiwork to be done, but after these adjustments have been made, said drums may remain unmolested unless it is desired to employ the' machine for a diferent classof work. The proper adjustments having been made, a fire will be built in the furnace 18 and the machine will then be set into operation, the damp material being supplied thereto from the hopper'30 and taken therefrom by the eonveyer 34, this material passing successively through the upper, intermediate and vlower drums. It is to be observed that while this takes place no one of the drums will receive the moisture from any of the others, since all of said moisture will be taken from the several drums by the blasts of air forced therethrough from the branches 27. This is a highly importantfeal machinein which blasts of air are directed through rotating drums. In so far as I am advised, however, the general organization of parts shown and described are novel and it is this arrangement and not any particular part thereof upon which I seek Letters Patent.

From the foregoing, taken in connection with the accompanying drawings, the construction; manner ofoperation and advantages of theilnproved machine Will be readily understood without requiring a more extended explanation, but in conclusion I will state that although a number of specific details have been shown and described for accomplishing probably the best results numerous changes may be made within the scope of the invention as claimed.

I claim:

1. In a rotary drier, the combination of a plurality of verticallyvspaced rotary drums through which the materialto be dried is adapted to travel, a housing surrounding said drums and having` a hot air inlet and a hot air outlet, the one being at the top of the housing and the other atthe bottom thereof, a vertically extending conduit with which the drums communicate at one end, a stack with which the other ends of said drums communicate, a'fan for drawing lhot air from the outlet of the housing, and

means leading from the outlet of said fan` for directing the hot air discharged therefrom through the drums into the stack.

2. In a rotary drier, the combination of a plurality of vertically spaced rotary drums through which the material to be dried is adapted to travel, a housing surrounding said drums and having a hot air inlet and a longitudinally extending heat outlet con- `duit, the one being disposed a-t the top of the housing and the other at the bottom thereof, a vertlcal conduit with which the drums communicate at one end, a stack with which the other ends of said drums communicate, a fan in the aforesaid heat outlet conduit for drawing hot air therefrom, and an outlet pipe from said fan located in the aforesaid vertical conduit and having branches for directing the hot air discharge from the fan through the drums into the stack.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

C. W; MILLER. 

